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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Rolling Shutter - how concerned should I be?

Jannard said:
Read/reset will be 10% faster in Build 15. Faster is better.

Jim
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Great news! Thanks!
Any possibility to make it even faster in future builds? :biggrin:
 
kinobairn said:
There were a few scenes in Jumper (not the ones shot with Red) where the lights flicker quite a bit, I didn't hear anyone complain about it in the theatre.
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I haven't seen that movie, but I doubt it's the kind of flicker I'm talking about.

There's intentional flicker for effect (fire, creepy look) and flicker from unsynced lights, which looks like something that might give you a seizure. Trust me, it's something totally unacceptable.

Shoot footage successfully using a mag ballast HMI and a non-sync shutter angle, then we can continue this discussion. Otherwise, trust me.
 
zak forrest said:
Crossing the Line?
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Zak, please... we have said many times that Boris and Natasha had 3-4 times the read/rest times the current build and the skew from Crossing was way too much. It was like a typical CMOS sensor back then. We fixed that almost 9 months ago.

Jim
 
Jannard said:
Zak, please... we have said many times that Boris and Natasha had 3-4 times the read/rest times the current build and the skew from Crossing was way too much. It was like a typical CMOS sensor back then. We fixed that almost 9 months ago.

Jim
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Whoa, I'm misunderstood, sorry. I haven't seen Crossing the Line since NAB (and it was awesome), I was just dropping the title of that movie in response to the other post, which was about gunfire, because I thought Crossing the Line was amazing and had lots of gunfire in it.

But I guess I should have written THAT statement, instead of the title of the film with a dot dot dot after it..

Also, I haven't scoured over Crossing the Line frame by frame, I guess there are probably skew issues in it.. So it's a stupid example for me to bring up anyways, I am also not up to the whole skew issue updates at all.. sorry to bring it up like that, I didn't mean it that way, and I'm totally uninformed on this whole skew subject. :sad:
 
Policar said:
I haven't seen that movie, but I doubt it's the kind of flicker I'm talking about.

There's intentional flicker for effect (fire, creepy look) and flicker from unsynced lights, which looks like something that might give you a seizure. Trust me, it's something totally unacceptable.

Shoot footage successfully using a mag ballast HMI and a non-sync shutter angle, then we can continue this discussion. Otherwise, trust me.
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Go watch Jumper and pay attention at the airport and at when they are in Asia crossing the street. It's definitely not something they wanted.

Also another interesting thing (maybe I'm crazy and just imagined it) but, whatever lens was used at the end to shoot Hayden, had tons of CA on his shoulder.
 
kinobairn said:
Go watch Jumper and pay attention at the airport and at when they are in Asia crossing the street. It's definitely not something they wanted.

Also another interesting thing (maybe I'm crazy and just imagined it) but, whatever lens was used at the end to shoot Hayden, had tons of CA on his shoulder.
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Hmm...I'll take a look at it (probably later on DVD, to be honest, since I don't get out to the movies much...) That makes sense and I bet you're right.

But I'll stick by one thing: it's still not as bad as the weird banding/flicker you'd get if your key light were flickering. Small practical sources in frame is one thing; your whole frame is another, and that's what an unsynced HMI can get you.
 
Statusfilms@yahoo.com said:
Now you guys are going to think this is nuts, but in some ways, I actually liked it in some of the shots. With a natural mixture of motion blur, I don't think any viewer is going to pick up on anything.

I agree- film cameras have it as well...
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From the tests I have seen I agree.

We have become used to the image artifacts introduced by the limitations of the capture systems since the early days of motion pictures. Flares, grain and limited panning speeds have been accepted as part of our visual language and any small artifacts of rolling shutter will be as well.

People who don't get it and shoot indiscriminately will eventually learn to work within the capabilities of their tools, as they have with other imaging systems.
 
Zak... sorry for my abrupt post.

Jim
 
Any comment on 120hz lighting sources (HMI, fluorescent, discharge) at 1/48th and 1/60th shutter speeds? These things, unlike whip pans, get used all the time.
 
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